®

8

PCM1718E

1024 system (= XTI) clocks

Reset

Reset Removal

2.6V

2.2V

1.8V

V

Internal Reset

XTI Clock

FIGURE 6. Internal Power-On Reset Timing.

FIGURE 7. RSTB-Pin Reset Timing.

Reset

PCM1718 has both internal power on reset circuit and the

RSTB-pin (pin 15) which accepts external forced reset by

RSTB = LOW. For internal power on reset, initialize (reset)

internal reset = LOW, the output of the DAC is invalid and

the timing of internal power on reset.

For the RSTB-pin, PSTB-pin accepts external forced reset by

RSTB = L. During RSTB = L, the output of the DAC is

internal initialize (1024 system clocks count after RSTB = H.)

Figure 7 illustrates the timing of RSTB-pin reset.

FIGURE 8. Typical Connection Diagram of PCM1718.

1

20

4

5

6

14

18

17

16

15

XTI

XTO

LRCIN

DIN

BCKIN

FORMAT

MUTE

DM1

DM0

RSTB

CLKO

V

D/C_R

D/C_L

V

ZERO

19

9

8

13

12

7

Format Control

Reset

PCM

Audio Data

Processor

To External Mute Circuit

10µF

V

DD

4.7k

Ω

+

FOUT = Inverted XTI (1 pin)

to Other System

+5V or +3 Analog Power Supply

Post

Low Pass

Filter

Post

Low Pass

Filter

10µF

+

0.1µF ~ 10µF

Bypass Capacitor

23

DGND

V

DD

10

11

AGND

V

CC

0.1µF ~ 10µF

Bypass Capacitor

10pF ~ 22pF

10pF ~ 22pF

(optional)

(optional)

1024 system (XTI) clocks

Reset

Reset Removal

XTI Clock

Internal Reset

RSTB-pin

50% of V

DD

t

RST

(1)

NOTE: (1) t